Agreed. I don't think they have to pay, but I do think they have to tick the box saying they want to have them listed publicly.I'm pretty sure the breeder has to request the result be posted online, I don't know if they have to pay for it or not. Yes, they should be review by the OFA, not just any vet. Even if she didn't have the results listed online, she should be willing to show them to you. I don't know what to think about theh "if she can find them part."
I wouldn't fully give up on the breeder yet if you feel she might be the one! She may just be disorganised. But definitely make sure she produces all health certification before going any further with her.